Patent
US 10,176,932METHOD OF MANUFACTURING GRAPHENE COMPOSITE INCLUDING ULTRASONIC-WAVE PULVERIZATION POST-TREATMENT PROCESS AND METHOD OF MANUFACTURING ACTIVE MATERIAL USING THE SAME
Sun-hwa Yeon
US
Copyright © 2026 Matter42. All rights reserved.
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is an electron microscopic picture obtained by photographing a -5- sample of a graphene composite, which includes RGO, not post-treated according to the …
FIG. 2 is an electron microscopic picture obtained by photographing the sample of the graphene composite, which includes the RGO and has undergone an …
FIG. 3 is an electron microscopic picture obtained by photographing the sample of the graphene composite, which includes the RGO and has undergone a …
FIG. 4 is an electron microscopic picture obtained by photographing the AC0830 activated carbon used in the present Example; [0029]
FIGS. 5 to 7 are electron microscopic pictures obtained by photographing the AC-RGO active material manufactured in the present Example; and [0030]
FIG. 8 shows the result obtained by measuring the capacitances of the active material of the present Example and the active material of a Comparative Example.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Cu rr ently Amended) A method of manufacturing a graphene composite, including an ultrasonic-wave pulverization post-treatment process, the method comprising: radiating with a microwave, a mixture of graphite oxide and a conducting agent in powder form, resulting in a reduced graphite oxide material; dispersing *-the resu tl ing reduced graphite oxide material in a liquid to form a colloidal solution; pulverizing particles in the colloidal solution using an ultrasonic-wave; and freeze-drying the pulverized particles. Currently amended
(Cu rr ently Amended) The method of claim 1, wherein the ultrasonic wave is applied at a power of 350 W or more for 1 hour or more during the ultrasonic-wave pulverization. Currently amended
The method of claim 1, wherein the freeze-drying is performed at a temperature of -45 ° C or less for 20 hours or more. Original
The method of claim 1, wherein a graphite powder is oxidized to obtain the graphite oxide. Original
The method of claim 1, wherein the conducting agent is at least one material selected from conductive carbon black and graphene oxide. Original
The method of claim 1, wherein the radiating the microwave is p erformed at p ower of 600 W or more in an inert gas atmos p here for 50 sec or more. Original
A method of manufacturing an active material for a supercapacitor, the method comprising: radiating with a microwave, a mixture of graphite oxide and a c onductin g agent in powder for ni. r esultin e in a raphi te o\idc mat erial; dispersing-the re s ultin g graphite oxide material, in a liquid 10 to rm a colloidal s olu t ion; pulverizing particles in the colloidal sol tu ion with an ultrasonic-wave; freeze-drying the pulv erii ed particles,., to form a graphene composite; and mixing the formed graphene composite and an activated carbon, forming the active material fo r the supercapac i ior. Currently amended
The method of claim 7, wherein the activated carbon for the active material is s p herical. Original
Embodiments described in the patent, grouped by the materials and process steps they use.
7 materials1 process step
3 g of graphite (average particle diameter ~4 µm), 360 ml H₂SO4, and 40 ml H₃PO₄ were mixed and agitated for 30 min. Cooled in ice bath for ~10 min, then 18 g KMnO₄ slowly added and agitated 30 min. Reacted at 55°C for 24 hours. Excess KMnO₄ removed by adding 3–18 ml H₂O₂ until sample turned yellow. Then 100 ml HCl, 100 ml ethanol, and 100 ml H₂O were mixed, added to the sample, and agitated 1 hour. Resultant solution washed with distilled water until pH ≥ 5, then dried to obtain GO powder.
3 materials1 process step
Synthesized GO powder and super-P (conducting agent) were mixed at a ratio of 9:1 and added to a 1000 ml beaker. The atmosphere inside the beaker was replaced with Ar using a glove box. (Text truncated in source.)
Layer stacks claimed or described, ordered top of device to substrate.
supercapacitor
Materials described outside the worked examples.
conducting agent
conductive carbon black
graphene oxide
graphene composite
activated carbon (spherical)
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 14–20 nm | — |
Thickness | 5–9 nm | — |
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is an electron microscopic picture obtained by photographing a -5- sample of a graphene composite, which includes RGO, not post-treated according to the …
FIG. 2 is an electron microscopic picture obtained by photographing the sample of the graphene composite, which includes the RGO and has undergone an …
FIG. 3 is an electron microscopic picture obtained by photographing the sample of the graphene composite, which includes the RGO and has undergone a …
FIG. 4 is an electron microscopic picture obtained by photographing the AC0830 activated carbon used in the present Example; [0029]
FIGS. 5 to 7 are electron microscopic pictures obtained by photographing the AC-RGO active material manufactured in the present Example; and [0030]
FIG. 8 shows the result obtained by measuring the capacitances of the active material of the present Example and the active material of a Comparative Example.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Cu rr ently Amended) A method of manufacturing a graphene composite, including an ultrasonic-wave pulverization post-treatment process, the method comprising: radiating with a microwave, a mixture of graphite oxide and a conducting agent in powder form, resulting in a reduced graphite oxide material; dispersing *-the resu tl ing reduced graphite oxide material in a liquid to form a colloidal solution; pulverizing particles in the colloidal solution using an ultrasonic-wave; and freeze-drying the pulverized particles. Currently amended
(Cu rr ently Amended) The method of claim 1, wherein the ultrasonic wave is applied at a power of 350 W or more for 1 hour or more during the ultrasonic-wave pulverization. Currently amended
The method of claim 1, wherein the freeze-drying is performed at a temperature of -45 ° C or less for 20 hours or more. Original
The method of claim 1, wherein a graphite powder is oxidized to obtain the graphite oxide. Original
The method of claim 1, wherein the conducting agent is at least one material selected from conductive carbon black and graphene oxide. Original
The method of claim 1, wherein the radiating the microwave is p erformed at p ower of 600 W or more in an inert gas atmos p here for 50 sec or more. Original
A method of manufacturing an active material for a supercapacitor, the method comprising: radiating with a microwave, a mixture of graphite oxide and a c onductin g agent in powder for ni. r esultin e in a raphi te o\idc mat erial; dispersing-the re s ultin g graphite oxide material, in a liquid 10 to rm a colloidal s olu t ion; pulverizing particles in the colloidal sol tu ion with an ultrasonic-wave; freeze-drying the pulv erii ed particles,., to form a graphene composite; and mixing the formed graphene composite and an activated carbon, forming the active material fo r the supercapac i ior. Currently amended
The method of claim 7, wherein the activated carbon for the active material is s p herical. Original
Embodiments described in the patent, grouped by the materials and process steps they use.
7 materials1 process step
3 g of graphite (average particle diameter ~4 µm), 360 ml H₂SO4, and 40 ml H₃PO₄ were mixed and agitated for 30 min. Cooled in ice bath for ~10 min, then 18 g KMnO₄ slowly added and agitated 30 min. Reacted at 55°C for 24 hours. Excess KMnO₄ removed by adding 3–18 ml H₂O₂ until sample turned yellow. Then 100 ml HCl, 100 ml ethanol, and 100 ml H₂O were mixed, added to the sample, and agitated 1 hour. Resultant solution washed with distilled water until pH ≥ 5, then dried to obtain GO powder.
3 materials1 process step
Synthesized GO powder and super-P (conducting agent) were mixed at a ratio of 9:1 and added to a 1000 ml beaker. The atmosphere inside the beaker was replaced with Ar using a glove box. (Text truncated in source.)
Layer stacks claimed or described, ordered top of device to substrate.
supercapacitor
Materials described outside the worked examples.
conducting agent
conductive carbon black
graphene oxide
graphene composite
activated carbon (spherical)
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 14–20 nm | — |
Thickness | 5–9 nm | — |
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is an electron microscopic picture obtained by photographing a -5- sample of a graphene composite, which includes RGO, not post-treated according to the …
FIG. 2 is an electron microscopic picture obtained by photographing the sample of the graphene composite, which includes the RGO and has undergone an …
FIG. 3 is an electron microscopic picture obtained by photographing the sample of the graphene composite, which includes the RGO and has undergone a …
FIG. 4 is an electron microscopic picture obtained by photographing the AC0830 activated carbon used in the present Example; [0029]
FIGS. 5 to 7 are electron microscopic pictures obtained by photographing the AC-RGO active material manufactured in the present Example; and [0030]
FIG. 8 shows the result obtained by measuring the capacitances of the active material of the present Example and the active material of a Comparative Example.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Cu rr ently Amended) A method of manufacturing a graphene composite, including an ultrasonic-wave pulverization post-treatment process, the method comprising: radiating with a microwave, a mixture of graphite oxide and a conducting agent in powder form, resulting in a reduced graphite oxide material; dispersing *-the resu tl ing reduced graphite oxide material in a liquid to form a colloidal solution; pulverizing particles in the colloidal solution using an ultrasonic-wave; and freeze-drying the pulverized particles. Currently amended
(Cu rr ently Amended) The method of claim 1, wherein the ultrasonic wave is applied at a power of 350 W or more for 1 hour or more during the ultrasonic-wave pulverization. Currently amended
The method of claim 1, wherein the freeze-drying is performed at a temperature of -45 ° C or less for 20 hours or more. Original
The method of claim 1, wherein a graphite powder is oxidized to obtain the graphite oxide. Original
The method of claim 1, wherein the conducting agent is at least one material selected from conductive carbon black and graphene oxide. Original
The method of claim 1, wherein the radiating the microwave is p erformed at p ower of 600 W or more in an inert gas atmos p here for 50 sec or more. Original
A method of manufacturing an active material for a supercapacitor, the method comprising: radiating with a microwave, a mixture of graphite oxide and a c onductin g agent in powder for ni. r esultin e in a raphi te o\idc mat erial; dispersing-the re s ultin g graphite oxide material, in a liquid 10 to rm a colloidal s olu t ion; pulverizing particles in the colloidal sol tu ion with an ultrasonic-wave; freeze-drying the pulv erii ed particles,., to form a graphene composite; and mixing the formed graphene composite and an activated carbon, forming the active material fo r the supercapac i ior. Currently amended
The method of claim 7, wherein the activated carbon for the active material is s p herical. Original
Embodiments described in the patent, grouped by the materials and process steps they use.
7 materials1 process step
3 g of graphite (average particle diameter ~4 µm), 360 ml H₂SO4, and 40 ml H₃PO₄ were mixed and agitated for 30 min. Cooled in ice bath for ~10 min, then 18 g KMnO₄ slowly added and agitated 30 min. Reacted at 55°C for 24 hours. Excess KMnO₄ removed by adding 3–18 ml H₂O₂ until sample turned yellow. Then 100 ml HCl, 100 ml ethanol, and 100 ml H₂O were mixed, added to the sample, and agitated 1 hour. Resultant solution washed with distilled water until pH ≥ 5, then dried to obtain GO powder.
3 materials1 process step
Synthesized GO powder and super-P (conducting agent) were mixed at a ratio of 9:1 and added to a 1000 ml beaker. The atmosphere inside the beaker was replaced with Ar using a glove box. (Text truncated in source.)
Layer stacks claimed or described, ordered top of device to substrate.
supercapacitor
Materials described outside the worked examples.
conducting agent
conductive carbon black
graphene oxide
graphene composite
activated carbon (spherical)
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 14–20 nm | — |
Thickness | 5–9 nm | — |
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is an electron microscopic picture obtained by photographing a -5- sample of a graphene composite, which includes RGO, not post-treated according to the …
FIG. 2 is an electron microscopic picture obtained by photographing the sample of the graphene composite, which includes the RGO and has undergone an …
FIG. 3 is an electron microscopic picture obtained by photographing the sample of the graphene composite, which includes the RGO and has undergone a …
FIG. 4 is an electron microscopic picture obtained by photographing the AC0830 activated carbon used in the present Example; [0029]
FIGS. 5 to 7 are electron microscopic pictures obtained by photographing the AC-RGO active material manufactured in the present Example; and [0030]
FIG. 8 shows the result obtained by measuring the capacitances of the active material of the present Example and the active material of a Comparative Example.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Cu rr ently Amended) A method of manufacturing a graphene composite, including an ultrasonic-wave pulverization post-treatment process, the method comprising: radiating with a microwave, a mixture of graphite oxide and a conducting agent in powder form, resulting in a reduced graphite oxide material; dispersing *-the resu tl ing reduced graphite oxide material in a liquid to form a colloidal solution; pulverizing particles in the colloidal solution using an ultrasonic-wave; and freeze-drying the pulverized particles. Currently amended
(Cu rr ently Amended) The method of claim 1, wherein the ultrasonic wave is applied at a power of 350 W or more for 1 hour or more during the ultrasonic-wave pulverization. Currently amended
The method of claim 1, wherein the freeze-drying is performed at a temperature of -45 ° C or less for 20 hours or more. Original
The method of claim 1, wherein a graphite powder is oxidized to obtain the graphite oxide. Original
The method of claim 1, wherein the conducting agent is at least one material selected from conductive carbon black and graphene oxide. Original
The method of claim 1, wherein the radiating the microwave is p erformed at p ower of 600 W or more in an inert gas atmos p here for 50 sec or more. Original
A method of manufacturing an active material for a supercapacitor, the method comprising: radiating with a microwave, a mixture of graphite oxide and a c onductin g agent in powder for ni. r esultin e in a raphi te o\idc mat erial; dispersing-the re s ultin g graphite oxide material, in a liquid 10 to rm a colloidal s olu t ion; pulverizing particles in the colloidal sol tu ion with an ultrasonic-wave; freeze-drying the pulv erii ed particles,., to form a graphene composite; and mixing the formed graphene composite and an activated carbon, forming the active material fo r the supercapac i ior. Currently amended
The method of claim 7, wherein the activated carbon for the active material is s p herical. Original
Embodiments described in the patent, grouped by the materials and process steps they use.
7 materials1 process step
3 g of graphite (average particle diameter ~4 µm), 360 ml H₂SO4, and 40 ml H₃PO₄ were mixed and agitated for 30 min. Cooled in ice bath for ~10 min, then 18 g KMnO₄ slowly added and agitated 30 min. Reacted at 55°C for 24 hours. Excess KMnO₄ removed by adding 3–18 ml H₂O₂ until sample turned yellow. Then 100 ml HCl, 100 ml ethanol, and 100 ml H₂O were mixed, added to the sample, and agitated 1 hour. Resultant solution washed with distilled water until pH ≥ 5, then dried to obtain GO powder.
3 materials1 process step
Synthesized GO powder and super-P (conducting agent) were mixed at a ratio of 9:1 and added to a 1000 ml beaker. The atmosphere inside the beaker was replaced with Ar using a glove box. (Text truncated in source.)
Layer stacks claimed or described, ordered top of device to substrate.
supercapacitor
Materials described outside the worked examples.
conducting agent
conductive carbon black
graphene oxide
graphene composite
activated carbon (spherical)
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 14–20 nm | — |
Thickness | 5–9 nm | — |